ericabell

// Given two absolute paths on a file system, write a function to determine the difference between them.
// For example, `/a/b/c` and `/a/d` should yield `../../d`.

// `/a/b/c` and `/e/f` => `../../../e/f`
// `/` and `/a/b/c` => `/a/b/c`
// `/a/b/c` and `/` => `../../../`


function difference(path1, path2) {
    // break the paths into lists and discard the first empty element